[39.03] The Pandora Atmosphere Program

E. H. Avrett, R. Loeser (CfA)

Pandora is a general-purpose non-LTE computer program
for calculating stellar atmospheric models and spectra.
We continue to improve and expand the capabilities of
this program as we seek better agreement with observations.
We also provide extensive documentation and explanation of
the computational procedures so that the results are
reasonably self explanatory. The Pandora program is
available on request to anyone willing to invest the effort
needed to become a successful user. Current applications
include extensive modeling of the outer atmospheres of the
Sun and cooler stars, including time-dependent effects, and
the atmospheric response to external ionizing radiation.
The program also can be used for simple illustrative studies
of optically thick non-LTE spectral line formation for
different multilevel atoms and atmospheric models.